O99.34 – Other mental disorders complicating pregnancy, childbirth, and the puerperium

Code

O99.34 (claims format: O9934)

Description

Other mental disorders complicating pregnancy, childbirth, and the puerperium

Short description

Oth mental disorders comp pregnancy, chldbrth, and the puerp

Billable

No – use a more specific code below

Valid for

Dates of service October 1, 2026 – September 30, 2027 (FY2027)

Chapter

15. Pregnancy, childbirth and the puerperium (O00-O9A)

Block

O94-O9A Other obstetric conditions, not elsewhere classified

Parent codes

O99 › O99.3

Billable codes under O99.34

O99.34 is a header code and cannot be used on claims. Choose the most specific code:

• O99.340 – Other mental disorders complicating pregnancy, unspecified trimesterBillable
• O99.341 – Other mental disorders complicating pregnancy, first trimesterBillable
• O99.342 – Other mental disorders complicating pregnancy, second trimesterBillable
• O99.343 – Other mental disorders complicating pregnancy, third trimesterBillable
• O99.344 – Other mental disorders complicating childbirthBillable
• O99.345 – Other mental disorders complicating the puerperiumBillable

Notes for O99.34

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

O99 – Other maternal diseases classifiable elsewhere but complicating pregnancy, childbirth and the puerperium

Index terms for O99.34

Entries in the ICD-10-CM alphabetic index that lead to this code:

• Pregnancy, complicated by, mental disorders

Related codes in O99.3

• O99.31 – Alcohol use complicating pregnancy, childbirth, and the puerperiumHeader
• O99.32 – Drug use complicating pregnancy, childbirth, and the puerperiumHeader
• O99.33 – Tobacco use disorder complicating pregnancy, childbirth, and the puerperiumHeader
• O99.35 – Diseases of the nervous system complicating pregnancy, childbirth, and the puerperiumHeader